As Neowin points out, the listing has actually been in the store for around a week, but it was showing as "out of stock" until now. It's still labeled as a "commercial" device, so it's intended for business customers. However, there doesn't appear to be a limitation in place, so anyone should be able to order one.

The Surface Pro with LTE Advanced only comes in two Intel Core i5 models, and only the model with 8GB of RAM and 256GB of storage is currently listed as available on the Microsoft Store. The tablet is equipped with Qualcomm's Snapdragon X16 LTE modem, which is packed into the space where the fan would be on the Core i7 Surface Pro. Microsoft previously offered a look at some of the engineering work that went into creating the LTE model that's worth checking out.

If you're interested, you can check out the Surface Pro with LTE at the Microsoft Store for $1,449 now. The tablet can also be found in stock at some retail Microsoft Stores. Presumably, the cheaper model with 4GB of RAM and 128GB of storage will be available from Microsoft at some point as well.